====================================== | [ 36.142800][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 36.143038][ C2] | [ 36.143128][ C2] | [ 36.143128][ C2] stack backtrace: [ 36.143832][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 36.144226][ C2] Call Trace: [ 36.144365][ C2] [ 36.144564][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 36.144749][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 36.144970][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 36.145190][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 36.145474][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 36.145654][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 36.145835][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 36.146012][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 36.146293][ C2] ? stack_trace_save (kernel/stacktrace.c:123) [ 36.146475][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 36.146652][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 36.146786][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 36.146924][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 36.147215][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 36.147391][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 36.147566][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 36.147742][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 36.148028][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 36.148204][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 36.148382][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 36.148556][ C2] _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:177 kernel/locking/spinlock.c:252) [ 36.148732][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 36.149018][ C2] ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 36.149195][ C2] ndisc_send_ns (net/ipv6/ndisc.c:658) [ 36.149376][ C2] ? __pfx_ndisc_send_ns (net/ipv6/ndisc.c:653) [ 36.149556][ C2] ? __ipv6_chk_addr_and_flags (net/ipv6/addrconf.c:2009) [ 36.149780][ C2] ndisc_solicit (net/ipv6/ndisc.c:736) [ 36.149957][ C2] ? __pfx_ndisc_solicit (net/ipv6/ndisc.c:736) [ 36.150133][ C2] ? neigh_probe (net/core/neighbour.c:1074) [ 36.150312][ C2] neigh_probe (net/core/neighbour.c:1075) [ 36.150555][ C2] neigh_timer_handler (net/core/neighbour.c:1163) [ 36.150738][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 36.150913][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) [ 36.151089][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 36.151379][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 36.151555][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 36.151729][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 36.151907][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.152083][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 36.152373][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 36.152546][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) [ 36.152720][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 36.152894][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 36.153185][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) [ 36.153363][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 36.153537][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 36.153715][ C2] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 36.154005][ C2] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 36.154178][ C2] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:127 kernel/time/timer_migration.c:925) [ 36.154353][ C2] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) [ 36.154572][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.154857][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 36.154990][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 36.155168][ C2] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) [ 36.155343][ C2] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) [ 36.155518][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) [ 36.155805][ C2] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) [ 36.155981][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 36.156199][ C2] __do_softirq (kernel/softirq.c:554) [ 36.156379][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 36.156624][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 36.156798][ C2] [ 36.156888][ C2] [ 36.156980][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 36.157196][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 36.157650][ C2] Code: 10 e8 21 49 9b fd 48 89 ef e8 59 b9 9b fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 05 bf 2f 55 <74> 0e 5b 5d c3 cc cc cc cc e8 4f b3 be fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 21 49 9b and %ecx,-0x65(%rcx) 5: fd std 6: 48 89 ef mov %rbp,%rdi 9: e8 59 b9 9b fd call 0xfffffffffd9bb967 e: 81 e3 00 02 00 00 and $0x200,%ebx 14: 75 1d jne 0x33 16: 9c pushf 17: 58 pop %rax 18: f6 c4 02 test $0x2,%ah 1b: 75 29 jne 0x46 1d: 48 85 db test %rbx,%rbx 20: 74 01 je 0x23 22: fb sti 23: 65 ff 0d 05 bf 2f 55 decl %gs:0x552fbf05(%rip) # 0x552fbf2f 2a:* 74 0e je 0x3a <-- trapping instruction 2c: 5b pop %rbx 2d: 5d pop %rbp 2e: c3 ret 2f: cc int3 30: cc int3 31: cc int3 32: cc int3 33: e8 4f b3 be fd call 0xfffffffffdbeb387 38: eb dc jmp 0x16 3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3f: 5b pop %rbx Code starting with the faulting instruction =========================================== 0: 74 0e je 0x10 2: 5b pop %rbx 3: 5d pop %rbp 4: c3 ret 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: e8 4f b3 be fd call 0xfffffffffdbeb35d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 36.158388][ C2] RSP: 0018:ffffc900006ef528 EFLAGS: 00000286 [ 36.158616][ C2] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff5be5955 [ 36.158880][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffaad40911 [ 36.159250][ C2] RBP: ffff888001040cc0 R08: 0000000000000001 R09: fffffbfff5be38a9 [ 36.159507][ C2] R10: ffffffffadf1c54f R11: 0000000000000200 R12: ffff888006011000 [ 36.159755][ C2] R13: 0000000000000000 R14: ffffc900006ef578 R15: ffff888006227a00 [ 36.160123][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 36.160326][ C2] qlist_free_all (mm/kasan/quarantine.c:174) [ 36.160492][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) [ 36.160656][ C2] __kasan_slab_alloc (mm/kasan/common.c:322) [ 36.160934][ C2] kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3852) [ 36.161117][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 36.161295][ C2] p9_tag_alloc (net/9p/client.c:285) [ 36.161472][ C2] ? __pfx_p9_tag_alloc (net/9p/client.c:277) [ 36.161647][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.161822][ C2] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 36.162006][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.162178][ C2] p9_client_prepare_req (net/9p/client.c:641) [ 36.162340][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 36.162610][ C2] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) [ 36.162813][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 36.162978][ C2] p9_client_rpc (net/9p/client.c:688 (discriminator 4)) [ 36.163148][ C2] ? __pfx_p9_client_rpc (net/9p/client.c:672) [ 36.163417][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 36.163579][ C2] ? list_lru_add (mm/list_lru.c:106) [ 36.163742][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 36.163906][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 36.164187][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 36.164351][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 36.164518][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 36.164684][ C2] p9_client_clunk (net/9p/client.c:1438 (discriminator 3)) [ 36.164961][ C2] v9fs_dentry_release (fs/9p/vfs_dentry.c:54) [ 36.165133][ C2] __dentry_kill (fs/dcache.c:608) [ 36.165297][ C2] ? __pfx_kfree_link (fs/libfs.c:1573) [ 36.165464][ C2] dput.part.0 (fs/dcache.c:845) [ 36.165739][ C2] walk_component (fs/namei.c:562 fs/namei.c:1027 fs/namei.c:2009) [ 36.165906][ C2] link_path_walk.part.0.constprop.0 (fs/namei.c:2328) [ 36.166112][ C2] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) [ 36.166318][ C2] path_openat (fs/namei.c:3795) [ 36.166593][ C2] ? __pfx_path_openat (fs/namei.c:3781) [ 36.166756][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 36.166924][ C2] do_filp_open (fs/namei.c:3826) [ 36.167091][ C2] ? __pfx_do_filp_open (fs/namei.c:3820) [ 36.167361][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 36.167526][ C2] ? __pfx_kfree_link (fs/libfs.c:1573) [ 36.167691][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 36.167855][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 36.167983][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 36.168254][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 36.168421][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 36.168546][ C2] do_sys_openat2 (fs/open.c:1406) [ 36.168707][ C2] ? vfs_fstatat (fs/stat.c:308) [ 36.168983][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1392) [ 36.169163][ C2] ? __pfx___do_sys_newfstatat (fs/stat.c:464) [ 36.169365][ C2] __x64_sys_openat (fs/open.c:1432) [ 36.169583][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) [ 36.169770][ C2] ? __pfx_do_faccessat (fs/open.c:465) [ 36.170047][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 36.170210][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 36.170420][ C2] RIP: 0033:0x7f83f8aa30e8 [ 36.170600][ C2] Code: f9 41 89 f0 41 83 e2 40 75 30 89 f0 25 00 00 41 00 3d 00 00 41 00 74 22 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 30 c3 0f 1f 80 00 00 00 00 48 8d 44 24 08 c7 All code ======== 0: f9 stc 1: 41 89 f0 mov %esi,%r8d 4: 41 83 e2 40 and $0x40,%r10d 8: 75 30 jne 0x3a a: 89 f0 mov %esi,%eax c: 25 00 00 41 00 and $0x410000,%eax 11: 3d 00 00 41 00 cmp $0x410000,%eax 16: 74 22 je 0x3a 18: 44 89 c2 mov %r8d,%edx 1b: 4c 89 ce mov %r9,%rsi 1e: bf 9c ff ff ff mov $0xffffff9c,%edi 23: b8 01 01 00 00 mov $0x101,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 30 ja 0x62 32: c3 ret 33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3a: 48 8d 44 24 08 lea 0x8(%rsp),%rax 3f: c7 .byte 0xc7 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 30 ja 0x38 8: c3 ret 9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 10: 48 8d 44 24 08 lea 0x8(%rsp),%rax 15: c7 .byte 0xc7 [ 36.171407][ C2] RSP: 002b:00007ffd5cba9c18 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 36.171801][ C2] RAX: ffffffffffffffda RBX: 00007ffd5cba9eaf RCX: 00007f83f8aa30e8 [ 36.172076][ C2] RDX: 0000000000080000 RSI: 00007ffd5cba9c90 RDI: 00000000ffffff9c [ 36.172348][ C2] RBP: 00007ffd5cba9c80 R08: 0000000000080000 R09: 00007ffd5cba9c90 [ 36.172723][ C2] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffd5cba9c97 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage